Box 1, Folder 3: Lapham's Collections

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raised parallel, acute lines forming strongly impressed [sulcoe?] between them. Umbilicus very large, resembling an inverted spire, in diameter at least equal to the breadth of the body whorl and exibiting [exhibiting] distinctly all the volutions. Diameter 3/10 of an inch (Jour. A.N.S. vol. 1 p.18.

Found by Mr Le [Suerer?] near lake Erie. It is referable to the genus Zonitis Montf.

11. H. Lineata Shell very much depressed, somewhat discoidal. Whorls about 4, each longer than broad, with numerous, raised parallel, equidistant, regular, revolving lines. Sutures impressed. Umbilicus very large diameter at least equal to the body whorl and exibiting [exhibiting] all the volutions

6.

distinctly. Aperture longer than wide, lunate. Diameter 3/20 of an inch, nearly. (Jour. A.N.S. vol 1. p18)

Found by Robert E Griffith, near Philadelphia. Somewhat resembled the last but is more depressed, and the striae are traverse not longitudinal as in that shell; the cavity beneath also, though of equal proportional diameter, is not proportionally deep. Belongs to the genus Zonitis Mont.

GENUS POLYGYRA

Shell discoidal, more or less carinated on the upper edge of the whorls, umbilicated; aperture longer than broad; lips thickened, toothed or folded and

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continued, folds concave beneath; pillar lip raised above the proceding whorls and concave beneath.

Animal granulated; tentacula 4; eys [eyes] at tip of superior tentacula and retractile; operculum none.

Species

P. Auriculata. Shell beneath convex; whorls 5, a little rounded, crossed by nu= merous raised equidistant lines, form= ing grooves between them; spire very little raised; lateral line (extending from the outer whorl to the apex) not convex but somewhat concave; mouth very unequal; lips prominent above, & pressed to the proceding whorl beneath pillar-lip suddently reflected, and [pressed?]

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into the mouth at an acute angle, be= neath very much ^ acutely concave; outer-lip a little more prominent in the middle and within the edge protruded into the mouth; throat extremely narrow, suture near the mouth suddenly re= flected from the preceding whorl, and carinate; umbilicus dilated very small within and exhibiting a groove on the outer whorl. Breadth of the fe= male nearly 1/2 an inch of the male 3/10 on an inch.

Inhabits Florida (Jour. A.N.S. vol 1. p.277)

This curious species we found near St Augustine, East Florida, in a moist situation. They were observed in consideralbe numbers; the colour is

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a redish [reddish] brown, indistinctly banded with whitish lines, sometimes with dark ^ darker ones, mouth white.

2 P. Avara Shell covered with ^ numerous short robust hairs; spire convex; whorls 4, regularly rounded, with hardly ele= vated lines forming grooves, which are much more conspicuous near the mouth; mouth subreniform, two projecting, obtuse teeth on the outer lip, within separated by a deep sinus; outer lip elevated, equal, describing 2/3 of a circle; pillar lip elevated, broadly but not profoundly emarginate, concave beneath, and connected by the inner side to an elongated lamelliform tooth,